Annesville Creek

Annesville Creek

Physical/Chemical Data

Physical, chemical and biological properties of the surface water that are measured continuously while the patrol boat is underway.

Entero Count (fecal indicator) and Rainfall

62 Samples taken

Sample Date [i] Enterococcus Count

Entero Count

Enterococcus (“Entero”) is a fecal indicating bacterium that lives in the intestines of humans and other warm-blooded animals. It is the EPA preferred indicator for sewage contamination.

QualityRain, day of (in)Prior Day2 Days Prior3 Days Prior Rain4 Days Total Rain
SortSortSortSortSortSortSortSort
10/17/201720Acceptable0.00.10.00.00.2
09/12/2017<10Acceptable0.00.00.00.00.0
08/15/201720Acceptable0.10.00.00.40.5
07/11/2017<10Acceptable0.40.10.00.00.5
06/13/2017<10Acceptable0.00.00.00.00.0
05/16/201710Acceptable0.00.00.11.71.8
10/16/2016<10Acceptable0.00.00.00.10.1
09/15/2016134Beach Advisory0.00.20.00.00.2
08/16/201620Acceptable0.00.00.10.10.2
07/14/201620Acceptable0.20.00.00.00.2
06/16/201652Acceptable0.00.00.00.00.0
05/21/201610Acceptable0.00.00.00.00.0
10/13/201520Acceptable0.00.00.00.00.0
09/12/201510Acceptable0.00.31.30.01.6
08/13/2015<10Acceptable0.00.01.00.01.0
07/09/2015<10Acceptable0.30.30.10.00.7
06/12/2015<10Acceptable0.00.00.00.20.2
05/13/201510Acceptable0.00.00.00.00.0
10/14/2014<10Acceptable0.00.00.00.40.4
09/08/2014<10Acceptable0.00.00.00.00.0
08/12/2014<10Acceptable0.00.00.00.00.0
07/08/201410Acceptable0.20.00.00.00.2
06/13/20142098Beach Advisory1.40.00.10.01.5
05/13/201410Acceptable0.00.00.10.30.4
10/17/201320Acceptable0.00.00.00.00.0
09/19/2013<10Acceptable0.00.00.00.00.0
08/15/201310Acceptable0.00.00.70.41.1
07/18/2013<10Acceptable0.00.00.00.00.0
06/20/201363Beach Advisory0.00.00.30.20.5
05/30/201310Acceptable0.00.00.40.00.4
10/11/2012<10Acceptable0.00.10.00.00.1
09/11/201220Acceptable0.00.00.01.41.4
08/14/201298Beach Advisory0.00.00.00.00.0
07/17/201210Acceptable0.00.00.20.00.2
06/12/201220Acceptable0.50.00.00.00.5
05/16/201210Acceptable0.10.40.10.00.6
10/20/2011393Beach Advisory0.00.10.00.00.1
09/15/2011578Beach Advisory0.00.00.00.00.0
08/17/201110Acceptable0.00.00.03.43.4
07/18/2011<10Acceptable0.00.00.00.00.0
06/28/201131Acceptable0.00.00.00.00.0
05/17/2011958Beach Advisory1.20.00.80.02.0
10/13/201010Acceptable0.00.10.30.00.4
09/12/201010Acceptable0.00.00.00.00.0
08/18/2010<10Acceptable0.00.00.20.30.5
07/22/2010275Beach Advisory0.00.10.01.41.5
06/16/201010Acceptable0.00.00.00.00.0
05/22/2010<10Acceptable0.00.00.00.00.0
10/20/200910Acceptable0.00.00.00.00.0
09/15/2009<10Acceptable0.00.00.00.00.0
08/21/2009<10Acceptable0.00.00.00.00.0
07/29/200910Acceptable0.60.00.00.20.8
06/23/200975Beach Advisory0.00.00.60.51.1
06/08/200910Acceptable0.00.00.00.80.8
05/13/20095Acceptable0.00.00.00.00.0
10/21/200810Acceptable0.00.00.00.00.0
09/23/2008<10Acceptable0.00.00.00.00.0
08/21/2008<10Acceptable0.00.00.00.00.0
07/15/200820Acceptable0.01.10.00.01.1
06/25/200818Acceptable0.00.00.00.10.1
06/16/2008365Beach Advisory0.00.01.70.01.7
05/20/200811Acceptable0.30.00.20.10.6

Entero Count (fecal indicator) and Rainfall Correlation

62 Samples taken

All Water Quality Parameters

62 Samples taken

Sample Date [i] Entero Count

Entero Count

Enterococcus (“Entero”) is a fecal indicating bacterium that lives in the intestines of humans and other warm-blooded animals. It is the EPA preferred indicator for sewage contamination.

Quality [i] Temp (f)

Temperature

Hudson River water temperature changes seasonally. Surface water temperature can change on small scales in the river reflecting natural and human influences.

[i] Salinity

Salinity

Estuaries like the Hudson are where freshwaters in rivers meet the sea. Salinity tells us about the relative contribution of fresh and salt water within a particular region of the estuary. 

[i] Chlorophyll

Chlorophyll

A measure of the amount of microscopic algae present in the water. High chlorophyll counts can mean high levels of the nutrients phosphorus and nitrogen, and the threat, or presence, of algae blooms.

[i] Turbidity

Turbidity

Turbidity is a measure of the amount of fine particles suspended in the water. As turbidity rises, light penetration, a key factor for aquatic plants and algae, diminishes.

[i] Oxygen

Oxygen

Oxygen concentrations in the water are closely connected to biological activities. Surface waters are typically in equilibrium with the atmosphere such that the oxygen concentration near the surface is close to fully saturated (100%).

SortSortSortSortSortSortSortSort
10/17/201720Acceptable64.74.55.810.598.3
09/12/2017<10Acceptable74.84.22.47.888.5
08/15/201720Acceptable79.32.410.511.994.6
07/11/2017<10Acceptable81.30.82.710.896.3
06/13/2017<10Acceptable76.90.13.59129.9
05/16/201710Acceptable60.60.12.020.5100.3
10/16/2016<10Acceptable66.96.82.53689
09/15/2016134Beach Advisory77.76.412.1n/a112
08/16/201620Acceptable84.53.51732118
07/14/201620Acceptable79.83.13415104
06/16/201652Acceptable72.628.72295
05/21/201610Acceptable60.50.53.632100
10/13/201520Acceptable684.441490
09/12/201510Acceptable814.73.51682
08/13/2015<10Acceptable81.33.68.614104
07/09/2015<10Acceptable76.90.23.32887
06/12/2015<10Acceptable70.80.63.71494
05/13/201510Acceptable61.11.4327n/a
10/14/2014<10Acceptable69.44.21.51491
09/08/2014<10Acceptable78.31.87.930111
08/12/2014<10Acceptable79.32.64.62183
07/08/201410Acceptable82.50.410.126109
06/13/20142098Beach Advisory71.22.54.51791
05/13/201410Acceptable63.20.82.221100
10/17/201320Acceptable69.94.42.31290
09/19/2013<10Acceptable74.61.73.71698
08/15/201310Acceptable79.413.45491
07/18/2013<10Acceptable82.61.73.53780
06/20/201363Beach Advisory72.70.12.321107
05/30/201310Acceptable69.80.12.26099
10/11/2012<10Acceptable64.22.25.217102
09/11/201220Acceptable76.43.210.247107
08/14/201298Beach Advisory79.53.416.519133
07/17/201210Acceptable84.84.720.515150
06/12/201220Acceptable72.20.24.52689
05/16/201210Acceptable64.90.16.245107
10/20/2011393Beach Advisory61.20.11.76289
09/15/2011578Beach Advisory67.80.125691
08/17/201110Acceptable83.51.72.13993
07/18/2011<10Acceptable83.30.35.621138
06/28/201131Acceptable780.67.86100
05/17/2011958Beach Advisory60.10.1n/an/a96
10/13/201010Acceptable65.80.14.32786
09/12/201010Acceptable74.82.99.21186
08/18/2010<10Acceptable81.83.87.5989
07/22/2010275Beach Advisory82.63.27.421122
06/16/201010Acceptable722.23.52084
05/22/2010<10Acceptable65.21.92.42294
10/20/200910Acceptable60.71.92.91893
09/15/2009<10Acceptable78.332.94496
08/21/2009<10Acceptable82.613.71889
07/29/200910Acceptable78.20.36.81986
06/23/200975Beach Advisory71.10.11.318103
06/08/200910Acceptablen/an/an/an/an/a
05/13/20095Acceptable65.20.23.317120
10/21/200810Acceptable64.54.31.7986
09/23/2008<10Acceptable75.12.51.51189
08/21/2008<10Acceptable79.91.41.81283
07/15/200820Acceptable82.42.48.922140
06/25/200818Acceptable77.22.81.51489
06/16/2008365Beach Advisoryn/an/an/an/an/a
05/20/200811Acceptable580.62.13194

Water Quality*

Acceptable (0–60) Beach Advisory (61+)

*Single sample thresholds;
Enterococcus count per 100mL

Prior Four Day Rainfall
(in inches)

Dry Weather (0–0.25) Wet Weather (0.25+)

Enterococcus is an EPA-approved fecal contamination indicator.

Samples taken by Riverkeeper, Lamont-Doherty Earth Observatory and CUNY Queens College staff, and processed on the Riverkeeper vessel, according to the 2014 Quality Assurance Project Plan.

Rainfall data comes from wunderground.com. Wet weather is a common trigger of fecal contamination.

What do the Numbers Mean?

Water Quality scoring is based on the 2012 Recreational Water Quality Criteria from the US Environmental Protection Agency (EPA) for safe swimming. Learn More

About this location:

Peekskill, NY
Annesville Creek is a tributary near Peekskill that is popular with kayakers.

Agencies Responsible:

Westchester County Dept. of Health: 914-813-5000 and NYSDEC Region 3: 914-428-2505

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